Ground based in situ observations of sulphate_corrected at Víznar (ES0007R) using high_vol_sampler. These measurements are gathered as a part of the following projects EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: sulphate_corrected in pm10 (mass_concentration_of_sulphate_corrected_for_seaspray_expressed_as_sulphur_in_pm10_in_air)